臺灣博碩士論文加值系統

隨著時代演進，許多企業資料數位化的程度越來越高，大量資料都儲存在電腦中。在台灣，中小型企業占了所有企業很大的比例，而大部分的中小型企業無法負擔大型伺服器的成本，也不想花錢投資這些設備。於是很多中小型企業就利用個人套裝電腦來當作伺服器使用，並且也沒注意資料備份的重要性。
在企業的電腦與伺服器硬碟中，都會儲存許多公司的重要數位資料，而有許多中小型企業，並沒有對這些重要的數位資料檔案進行安全且完整的備份。所以一但硬碟發生遺失或是損壞的狀況，將對企業產生許多的損失與阻礙，而且要花許多時間進行遺失損壞的資料復原。甚至有可能造成進度延遲，進而產生商譽上的損害。於是要如何讓這些中小型企業能夠以較低的成本，來達到一定的資料保護、儲存與備份水準，是一個重要的議題。
本研究報告提出了一家企業的實務案例，讓我們以低成本的網路附加儲存(Network Attached Storage)與磁碟陣列(Redundant Array of Independent Disks)，再加上高可用性技術(High-Availability)與不斷電系統(Uninterruptible Power Supply)，協助企業建置了一套私有雲端儲存伺服器，提升企業資料儲存的安全性、高可用性與共享的便利性。

The degree of digitized of enterprise information becomes more and more highly, and most of this digitized data stored in the computer. High percentages of enterprises are small and medium in Taiwan. Therefore, most of them cannot afford the cost of large-scale servers, and do not intention to invest in such costs. Many small and medium enterprises (SMEs) using personal computers act as servers, and disregard the importance of data backup. The important enterprise data is often stored in the computer hard drive. However, there is no complete safety for data backup established for most of SMEs. It will encounter business obstacles when lost data or damaged hard drive is happened. They have to spend a lot of time for data recovery. Furthermore, it may cause the schedule delays and hurt the business goodwill on. Accordingly, how to achieve a certain level of data backup and improve safety in the lower costs for SMEs is an important issue. In this paper, we present a practical case in which we used low cost network attached storage (NAS) and Redundant Array of Independent Disks (RAID) to help the enterprise to build a private cloud storage server. It enhances the enterprise data more security, High-Availability (HA), and the convenient sharing.

目錄
摘要 I
Abstract II
目錄 III
圖目錄 IV
第一章 前言 1
第二章 相關技術探討 3
2.1 NAS 3
2.2 RAID 6
2.3 HA 10
2.4 Snapshot 10
2.5 UPS 11
第三章 系統架設 13
3.1需求分析 13
3.2建置私有雲端硬碟系統 16
3.3系統改善 20
第四章 案例成果 24
4.1案例成效 24
4.2實際事件 26
第五章 結論 32
參考文獻 33

圖目錄
圖 1. Synology的NAS [14] 5
圖 2. ASUStor的NAS [12] 5
圖 3. Thecus的NAS [15] 6
圖 4. QNAP的NAS [13] 6
圖 5. RAID 0的架構[16] 7
圖 6. RAID 1的架構[16] 8
圖 7. RAID 5的架構[16] 8
圖 8. RAID 10的架構[16] 9
圖 9. 本實務案例之流程圖 13
圖 10. 企業的原始網路架構 15
圖 11. NAS取代原伺服器後的網路架構 18
圖 12.NAS私有雲端儲存伺服器 19
圖 13. NAS伺服器管理介面 19
圖 14. 帳號管理介面 20
圖 15. 防火牆規則 21
圖 16. 異地備份 22
圖 17. 快照保護 23
圖 18. 磁碟群組錯誤紀錄 26
圖 19. 儲存空間降級警告 26
圖 20. 硬碟錯誤紀錄 27
圖 21. 堪用的磁碟陣列 28
圖 22. 備援伺服器失效紀錄 29
圖 23. 高可用性同步中 30

表目錄
表 1. 企業導入NAS後的成效比較[7] 24

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[15]Thecus Technology Corp, http://www.thecus.com
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